Tunable thermodynamic stability of Au–CuPt core–shell trimetallic nanoparticles by controlling the alloy composition: insights from atomistic simulations

2014 ◽  
Vol 16 (41) ◽  
pp. 22754-22761 ◽  
Author(s):  
Rao Huang ◽  
Gui-Fang Shao ◽  
Yu-Hua Wen ◽  
Shi-Gang Sun
Keyword(s):  
Thermal Stability ◽  
Thermodynamic Stability ◽  
Alloy Composition ◽  
Atomistic Simulations ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Metallic Core ◽  
Core Shell Nanoparticles ◽  
Thermal Stability Of

A microscopic understanding of the thermal stability of metallic core–shell nanoparticles is of importance for their synthesis and ultimately application in catalysis.

Thermal Stability of Core–Shell Nanoparticles: A Combined in Situ Study by XPS and TEM

2015 ◽  
Vol 27 (20) ◽  
pp. 6960-6968 ◽  
Author(s):  
Cecile S. Bonifacio ◽  
Sophie Carenco ◽  
Cheng Hao Wu ◽  
Stephen D. House ◽  
Hendrik Bluhm ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
In Situ Study ◽  
Core Shell Nanoparticles ◽  
Thermal Stability Of

Computer Modeling of the Formation Process of Core-Shell Nanoparticles Cu@Si

2018 ◽  
Vol 271 ◽  
pp. 47-50 ◽  
Author(s):  
Natalia V. Yumozhapova ◽  
Andrey V. Nomoev ◽  
Yuri Ya. Gafner
Keyword(s):  
Thermal Stability ◽  
Formation Process ◽  
Molecular Dynamic Method ◽  
Dynamic Method ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Droplet Behavior ◽  
Core Shell Structure ◽  
Core Shell Nanoparticles ◽  
Thermal Stability Of

The process of nanoparticle Cu@Si formation by the molecular dynamic method using MEAM-potentials was studied. Modeling the droplet behavior demonstrates that a core-shell structure with a copper core and a silicon shell can be formed if the drop is in the liquid state, until the material is finally redistributed. The parameters of thermal stability of Cu@Si composite nanoparticles of different sizes have been determined. It is concluded that as the temperature increases, the diffusion of copper atoms to the surface begins, which leads to a change in the structure and the formation of particles with a core of the Cu@Si type.

Core-shell Ge Nanoparticles on Oxide Surfaces for Enhanced Interface Stability

2006 ◽  
Vol 933 ◽  
Author(s):  
Scott K. Stanley ◽  
John G. Ekerdt
Keyword(s):  
Thermal Stability ◽  
Photoelectron Spectroscopy ◽  
Chemical Vapor ◽  
Core Shell ◽  
Ion Scattering ◽  
Shell Nanoparticles ◽  
X Ray ◽  
Low Energy Ion Scattering ◽  
Core Shell Nanoparticles ◽  
Thermal Stability Of

ABSTRACTGermanium nanoparticles are grown on HfO2 substrates by hot-wire chemical vapor deposition (HWCVD). The oxidation and thermal stability of these unmodified Ge nanoparticles are determined with X-ray photoelectron spectroscopy (XPS). Core-shell nanoparticles were then prepared by growing the Ge cores with HWCVD and selectively growing Si or C shell layers on the Ge cores by conventional CVD. The formation of core-shell nanoparticles was monitored with XPS and low energy ion scattering. Large differences are observed in the thermal stability and oxide formation for unmodified Ge and the different core-shell nanoparticles.

Thermal stability of Cu@Ag core–shell nanoparticles

2013 ◽  
Vol 74 ◽  
pp. 123-129 ◽  
Author(s):  
Chi-Hang Tsai ◽  
Shih-Yun Chen ◽  
Jenn-Ming Song ◽  
In-Gann Chen ◽  
Hsin-Yi Lee
Keyword(s):  
Thermal Stability ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Thermal Stability Of
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